Steerable guidewire with deflectable tip
First Claim
1. A steerable guidewire having a deflectable tip which comprises:
- flexible tubing having proximal and distal ends and inner and outer surfaces, said distal end having an internal annular recess,a helically wound flexible spring coil having proximal and distal ends, the proximal end of said spring coil being attached to the flexible tubing in its internal annular recess and the distal end of said spring coil comprising stretched coils,a deflection wire extending through the flexible tubing and spring coil, said deflection wire having proximal and distal ends,a rounded tip engaging the distal end of the spring coil and the distal end of the deflection wire, andcontrol means attached to the proximal end of the flexible tubing, wherein the proximal end of the deflection wire is engaged by an engaging member, the control means having rotation means and deflection means such that when the rotation means is rotated, the distal end of the spring coil rotates about its longitudinal axis and that when the deflection means is activated, the engaging means moves in an axial direction to cause said deflection wire to move relative to the tubing to cause the distal end of the guidewire to move toward or away from the line of the longitudinal axis of the guidewire.
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Accused Products
Abstract
The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end of the spring coil being attached to the flexible tubing and the distal end of the spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, the deflection wire having proximal and distal ends, optionally a control wire having proximal and distal ends, the proximal end of the control wire being attached to the spring coil proximal to the stretched coils, and a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire.
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Citations
20 Claims
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1. A steerable guidewire having a deflectable tip which comprises:
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flexible tubing having proximal and distal ends and inner and outer surfaces, said distal end having an internal annular recess, a helically wound flexible spring coil having proximal and distal ends, the proximal end of said spring coil being attached to the flexible tubing in its internal annular recess and the distal end of said spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, said deflection wire having proximal and distal ends, a rounded tip engaging the distal end of the spring coil and the distal end of the deflection wire, and control means attached to the proximal end of the flexible tubing, wherein the proximal end of the deflection wire is engaged by an engaging member, the control means having rotation means and deflection means such that when the rotation means is rotated, the distal end of the spring coil rotates about its longitudinal axis and that when the deflection means is activated, the engaging means moves in an axial direction to cause said deflection wire to move relative to the tubing to cause the distal end of the guidewire to move toward or away from the line of the longitudinal axis of the guidewire. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A steerable guidewire having a deflectable tip which comprises:
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flexible tubing having proximal and distal ends and inner and outer surfaces, the distal end of the flexible tubing having an internal annular recess, a helically wound flexible spring coil having proximal and distal end, the proximal end of said spring coil being attached to the distal end of the flexible tubing in its internal annular recess and the distal end of said spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, said deflection wire having proximal and distal ends, a control wire having proximal and distal ends, the proximal end being attached by a weld, a brazed joint, or solder to said spring coil proximal to the stretched coils, a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire, and control means attached to the proximal end of the flexible tubing, wherein the proximal end of the deflection wire is engaged by an engaging member, the control means having rotation means and deflection means such that when the rotation means is rotated, the distal end of the spring coil rotates about its longitudinal axis and that when the deflection means is activated, the engaging means moves in an axial direction to cause said deflection wire to move relative to the tubing to cause the distal end of the guidewire to move toward or away from the line of the longitudinal axis of the guidewire. - View Dependent Claims (8, 9, 10)
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11. A steerable guidewire having a deflectable tip which comprises:
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flexible tubing having proximal and distal ends and inner and outer surfaces, said distal end having an internal annular recess, a helically wound flexible spring coil having proximal end distal ends, the proximal end of said spring coils being attached to the flexible tubing in its internal annular recess and the distal end of said spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, said deflection wire having proximal and distal ends, and a rounded tip engaging the distal end of the spring coil and the distal end of the deflection wire. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A steerable guidewire having a deflectable tip which comprises:
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flexible tubing having proximal and distal end and inner and outer surfaces, the distal end of the flexible tubing having an internal annular recess, a helically wound flexible spring coil having proximal and distal ends, the proximal end of said spring coil being attached to the distal end of the flexible tubing in its internal annular recess and the distal end of said spring coil comprising stretched coils, a deflection wire extending through the flexible tubing and spring coil, said deflection wire having proximal and distal ends, a control wire having proximal and distal ends, the proximal end being attached by a weld, a brazed joint, or solder to said spring coil proximal to the stretched coils, and a rounded tip engaging the distal end of the spring coil, the distal end of the deflection wire, and the distal end of the control wire. - View Dependent Claims (18, 19, 20)
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Specification